Window-sash fastener.



W. C. LYNHAM.

WINDOW SASH FASTENER.

APPLICATION men FEB. 21. 1916.

Patented Jan. 30, 1917.

2 SHEETS-SHEET I.

W. C. LYNHAM.

wmoow sAsH FASTENER.

APPLICATION FILED FEB. 2|, I916.

1-,Q14A76. Patented Jan. 30, 1917.

2 SHEETS-SHEET 2- W61 y 60m;

-4z NORPIS PETERS 5a., was/mummy c srrrrns Parana WILLIAM CLIFFGRD LYNHAI/I, OF RICIEMGND, VIRGINIA, .ASSIGNGR F ONE-EIGHTH TO MARTIN LUTHER ANDERSON, 0F RICHMOND, VIRGINIA.

WINDOW-SASI-I FASfi'IENER.

specification of Letters Eatent.

Patented Jan. 30 15917.

To all whom it may concern.-

it known that I, VJILLIAM G. LYNI-IAM, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Window-Sash Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to windows, and more especially to those having sliding and swinging sashes; and the object of the same is to improve the construction the devices for locking the sv-Jinging element within the sliding element, and for locking the latter within the window casing.

My improved sash structure is capable of use with or without the customary weights, and with or without weather-proofing strips, certain of which are shown herein.

The invention comprises the details hereinafter more fully described and claimed.

In the accompanying drawings: Figure 1 is a perspective view of a window, both of whose sashes are equipped with my invention. Fig. 9 is a vertical section of one sash with its frame swung partly open in full lines and farther open in dotted lines, and Fig. 3 is a fragmentary section on about the line 3-3 of Fig. 2. Fig. 4: is a detail of the escutcheon plate. Fig. 5 is a sectional detail of Fig. 1.

In the drawings the letter W designates the ordinary window casing S, S are the sashes movable vertically between stops therein as usual and possibly counterbalanced by weights as usual, and F designates an inner sash or frame hinged at II at either top or bottom within the sash and itself carrying one or more panes of glass G. These frames are hinged within the sashes so that the glass may be cleaned on the outside while the operator remains indoors-thus obviating-the necessity that she sit upon the sill, a practice which has resulted in numerous accidents. With a frame F swung inward as seen at the top of Fig. 1, it is obvious that the outside of the glass G can be reached. Moreover it is quite possible to use this swinging frame for ventilating purposes, even at night, and with the two sashes still locked to each other. In that case, or in fact in any case, it becomes desirable to provide some means for locking the fram either in its closed position or when it has been swung open more or less from a vertical to a. horizontal position; and this locking means may be said to form the essential feature of the present invention. In Fig. 2 I have shown the frame as swingin closed a ainst a flange or strip S at the outside of the sash S so as to be as nearly as possible weatherproof, and in Fig. 1 the inner faces of the frame and sash are shown as flush. However, it is quite possible to have the strip F on the frame F so that it will overlap the joint between the frame and sash, or both strips could be used as seen in Fig. 2. These and other details, and the size and shape of parts are not essential. but it will be clear that the frame should fit as closely as possible into the sash in order to prevent leakage between them, and the parts described below have been constructed with this end in view.

Moun ed in suitable recesses I and 2 along the top and down the edges of the frame F is an L-shaped od 3 whose horizontal arm slides under and whose vertical arm stands behind a thin sheet metal cover plate a tacked along it edges to the frame and closing the upright recess 2 and most or all of the horizontal recess 1. Near its lower end this plate has a hole 5 through which projects the out-turned lo ver end of the rod 3, which end serves as a fastener for the frame and is hereinaft r called the latch 6. The inner end of the upper arm of the rod 3 is turned downward and brought forward as seen at 7 in Fig. 3, and is preferably fiattened or otherwise provided with a thumb piece 8 as best seen in Fig. l, the end 7 serving as a shank therefor and moving in a slot 9 formed in the rear plate of an escutcheon 10 which is countersunk into and secured to the upper cross bar of the frame F. Such is also the construction of the companion rod which would be at the right side of the frame whose left side only is shown in Fig. 3, and between the inner ends 7 of the two rods and behind the escutcheon plate 10 is an expansive spring 11. The tendency of this spring is to throw both rods outward so that their latches 6 are projected through the holes 5 in the cover plate 4.

Sliding against each edge of the frame F is a bar which is by preference made of strap iron so that it will be flat and thin, and

its body is provided with a series of holes 16 with which the latch 6 is adapted to engage. The upper end of this bar is guided beneath the cover plate 4, and its lower end is slidably mounted within a guide 14-, the plate and the guide being also made quite thin. About midway of its length the bar 15 is pivotally connected at 17 with a link 18 whose lower end ispivoted at 19 inside the sash S as best seen in Fig. 2. This link also is preferably made of strap iron or some other metal, with one edge bent at right angles as at 18' to give it stiffness. The combined thicknesses of the link, the lower guide 14, and the bar 15 within it is such that when the frame is folded into the sash the space between them can be closed by a comparatively narrow strip on either the frame or the sash as suggested above. In other words, it will hardly be desirable to use rods for these members, and very thin strapmetal is preferred, although the rod 3 should be of sufficient size to have some'little stiffness.

With this construction of parts, when it is desired to open one of the frames the operator inserts his thumb and finger into the end of the escutcheon 10 outside the thumb pieces 8, and presses them toward each other. This compresses the spring 11 and draws the two rods 3 inward so that their latches 6 are disengaged from the lowermost of the series of holes 16 in the bars 15. Then, still grasping the thumb pieces 8, the frame is swung inward as shown at the top of Fig. 1, and when at about the proper position pressure on the thumb pieces is released and the latches 6 move outward. Meanwhile the links 18 have caused the bars 15 to slide downward in their guides, and

the result is that the latches engage the next holes 16 which come opposite to them. The frame is restored to its normal position by a reversal of this movement. .While engage.- ment of the latches with the lowermost holes 16 will to a degree fasten the frame closed, I prefer to provide the side rails of the sash with sockets 20 into which the tips of the latches project at this time, and this forms an additional and more reliable locking means.

Fig. 5. shows the sash fastener detail whereby, not only is the frame F locked in the sash S, but the latter is also looked in the window frame W; and the ordinary sash lock may be omitted. It is undesirable that the latch 6 shall be of sufficient length to reach clear through the side rail of the sash, and therefore I provide a bolt 26 mounted within a housing 2% Within the sash and surrounded by a spring 27 which presses the head 28 of the bolt normally against a shoulder 29 at the inner open end of the housing. This retracts the tip of the bolt so that ordinarily it does not project beyond the sash S. In the window casing W is a socket 80' as seen in Fig. 9. Now when the frame F is closed into the sash and pressure on the thumb pieces released, the locking mechanism throws the latch 6 outward and its tip not only passes through the hole in the bar "15 but contacts with the head 28 of the bolt 26 and projects the latter, so that its tip in turn is projected into the socket 80 in the windowcasing WV and all parts are locked together. Obviously the spring '11 in the frame lock must be stronger than the spring 27 in the sash look so that the former will overcome the latter.

'lVhat I claim is;

1. A combined fastener for a structure comprising one element slidably mounted within a casing and a second element hingedlymounted within the first, said fastener consisting of a bolt normally housed within the first element, the casing having a socket with which the tip of the bolt alines when this element is closed, a second bolt in the swinging element adapted to aline with the first when this element is closed, a weak spring normally retracting the first bolt, a stronger spring normally projecting the second bolt and adapted when both elements are closed to lock the second to the first and to project the first bolt and lock the first element to the casing, and manually operable means for retracting the second bolt.

2. In a window, the combination with a casing having sockets in its side rails, a sash also having sockets in its side rails, a housing in each sash socket, a bolt therein whose tip is adapted to engage the socket in the casing, and a relatively weak spring bearing it normally out of-such engagement and into the housing of a frame'movably mounted within the sash, and mechanism for locking this frame in'adjusted position, said mechanism including a latch adapted to aline with said bolt .when the parts are closed, and. a. latch-projecting spring relatively stronger than the one mentioned.

ln testim ony whereof I my signature 7 in presence of two witnesses,

opie o t i aten m be a te nerl' f W cents a. by ee rs n t Commiss n o were;

Wa ngt D- G,

WILLIAM current LYNHAM. 

